package com.xcjw.com.Utils;

/**
 * @packname com.xcjw.com.Utils
 * @filename SystemBarTintManager
 * @date on 2018/11/16 16:09
 *****/
/*
 * Copyright (C) 2013 readyState Software Ltd
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import android.os.Build;


import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout.LayoutParams;

import java.lang.reflect.Method;

/**
 * Class to manage status and navigation bar tint effects when using KitKat
 * translucent system UI modes.
 */
public class SystemBarTintManager {

      static {
            // Android allows a system property to override the presence of the navigation bar.
            // Used by the emulator.
            // See https://github.com/android/platform_frameworks_base/blob/master/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java#L1076
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                  try {
                        Class c = Class.forName("android.os.SystemProperties");
                        Method m = c.getDeclaredMethod("get", String.class);
                        m.setAccessible(true);
                        sNavBarOverride = (String) m.invoke(null, "qemu.hw.mainkeys");
                  } catch (Throwable e) {
                        sNavBarOverride = null;
                  }
            }
      }


      /**
       * The default system bar tint color value.
       */
      public static final int DEFAULT_TINT_COLOR = 0x99000000;

      private static String sNavBarOverride;

      private final SystemBarConfig mConfig;
      private boolean mStatusBarAvailable;
      private boolean mNavBarAvailable;
      private boolean mStatusBarTintEnabled;
      private boolean mNavBarTintEnabled;
      private View mStatusBarTintView;
      private View mNavBarTintView;

      /**
       * Constructor. Call this in the host activity onCreate method after its
       * content view has been set. You should always create new instances when
       * the host activity is recreated.
       *
       * @param activity The host activity.
       */
      @TargetApi(19)
      public SystemBarTintManager(Activity activity) {

            Window win = activity.getWindow();
            ViewGroup decorViewGroup = (ViewGroup) win.getDecorView();

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                  // check theme attrs
                  int[] attrs = {android.R.attr.windowTranslucentStatus,
                            android.R.attr.windowTranslucentNavigation};
                  TypedArray a = activity.obtainStyledAttributes(attrs);
                  try {
                        mStatusBarAvailable = a.getBoolean(0, false);
                        mNavBarAvailable = a.getBoolean(1, false);
                  } finally {
                        a.recycle();
                  }

                  // check window flags
                  WindowManager.LayoutParams winParams = win.getAttributes();
                  int bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
                  if ((winParams.flags & bits) != 0) {
                        mStatusBarAvailable = true;
                  }
                  bits = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
                  if ((winParams.flags & bits) != 0) {
                        mNavBarAvailable = true;
                  }
            }

            mConfig = new SystemBarConfig(activity, mStatusBarAvailable, mNavBarAvailable);
            // device might not have virtual navigation keys
            if (!mConfig.hasNavigtionBar()) {
                  mNavBarAvailable = false;
            }

            if (mStatusBarAvailable) {
                  setupStatusBarView(activity, decorViewGroup);
            }
            if (mNavBarAvailable) {
                  setupNavBarView(activity, decorViewGroup);
            }

      }

      /**
       * Enable tinting of the system status bar.
       * <p>
       * If the platform is running Jelly Bean or earlier, or translucent system
       * UI modes have not been enabled in either the theme or via window flags,
       * then this method does nothing.
       *
       * @param enabled True to enable tinting, false to disable it (default).
       */
      public void setStatusBarTintEnabled(boolean enabled) {
            mStatusBarTintEnabled = enabled;
            if (mStatusBarAvailable) {
                  mStatusBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
            }
      }

      /**
       * Enable tinting of the system navigation bar.
       * <p>
       * If the platform does not have soft navigation keys, is running Jelly Bean
       * or earlier, or translucent system UI modes have not been enabled in either
       * the theme or via window flags, then this method does nothing.
       *
       * @param enabled True to enable tinting, false to disable it (default).
       */
      public void setNavigationBarTintEnabled(boolean enabled) {
            mNavBarTintEnabled = enabled;
            if (mNavBarAvailable) {
                  mNavBarTintView.setVisibility(enabled ? View.VISIBLE : View.GONE);
            }
      }

      /**
       * Apply the specified color tint to all system UI bars.
       *
       * @param color The color of the background tint.
       */
      public void setTintColor(int color) {
            setStatusBarTintColor(color);
            setNavigationBarTintColor(color);
      }

      /**
       * Apply the specified drawable or color resource to all system UI bars.
       *
       * @param res The identifier of the resource.
       */
      public void setTintResource(int res) {
            setStatusBarTintResource(res);
            setNavigationBarTintResource(res);
      }

      /**
       * Apply the specified drawable to all system UI bars.
       *
       * @param drawable The drawable to use as the background, or null to remove it.
       */
      public void setTintDrawable(Drawable drawable) {
            setStatusBarTintDrawable(drawable);
            setNavigationBarTintDrawable(drawable);
      }

      /**
       * Apply the specified alpha to all system UI bars.
       *
       * @param alpha The alpha to use
       */
      public void setTintAlpha(float alpha) {
            setStatusBarAlpha(alpha);
            setNavigationBarAlpha(alpha);
      }

      /**
       * Apply the specified color tint to the system status bar.
       *
       * @param color The color of the background tint.
       */
      public void setStatusBarTintColor(int color) {
            if (mStatusBarAvailable) {
                  mStatusBarTintView.setBackgroundColor(color);
            }
      }

      /**
       * Apply the specified drawable or color resource to the system status bar.
       *
       * @param res The identifier of the resource.
       */
      public void setStatusBarTintResource(int res) {
            if (mStatusBarAvailable) {
                  mStatusBarTintView.setBackgroundResource(res);
            }
      }

      /**
       * Apply the specified drawable to the system status bar.
       *
       * @param drawable The drawable to use as the background, or null to remove it.
       */
      @SuppressWarnings("deprecation")
      public void setStatusBarTintDrawable(Drawable drawable) {
            if (mStatusBarAvailable) {
                  mStatusBarTintView.setBackgroundDrawable(drawable);
            }
      }

      /**
       * Apply the specified alpha to the system status bar.
       *
       * @param alpha The alpha to use
       */
      @TargetApi(11)
      public void setStatusBarAlpha(float alpha) {
            if (mStatusBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                  mStatusBarTintView.setAlpha(alpha);
            }
      }

      /**
       * Apply the specified color tint to the system navigation bar.
       *
       * @param color The color of the background tint.
       */
      public void setNavigationBarTintColor(int color) {
            if (mNavBarAvailable) {
                  mNavBarTintView.setBackgroundColor(color);
            }
      }

      /**
       * Apply the specified drawable or color resource to the system navigation bar.
       *
       * @param res The identifier of the resource.
       */
      public void setNavigationBarTintResource(int res) {
            if (mNavBarAvailable) {
                  mNavBarTintView.setBackgroundResource(res);
            }
      }

      /**
       * Apply the specified drawable to the system navigation bar.
       *
       * @param drawable The drawable to use as the background, or null to remove it.
       */
      @SuppressWarnings("deprecation")
      public void setNavigationBarTintDrawable(Drawable drawable) {
            if (mNavBarAvailable) {
                  mNavBarTintView.setBackgroundDrawable(drawable);
            }
      }

      /**
       * Apply the specified alpha to the system navigation bar.
       *
       * @param alpha The alpha to use
       */
      @TargetApi(11)
      public void setNavigationBarAlpha(float alpha) {
            if (mNavBarAvailable && Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                  mNavBarTintView.setAlpha(alpha);
            }
      }

      /**
       * Get the system bar configuration.
       *
       * @return The system bar configuration for the current device configuration.
       */
      public SystemBarConfig getConfig() {
            return mConfig;
      }

      /**
       * Is tinting enabled for the system status bar?
       *
       * @return True if enabled, False otherwise.
       */
      public boolean isStatusBarTintEnabled() {
            return mStatusBarTintEnabled;
      }

      /**
       * Is tinting enabled for the system navigation bar?
       *
       * @return True if enabled, False otherwise.
       */
      public boolean isNavBarTintEnabled() {
            return mNavBarTintEnabled;
      }

      private void setupStatusBarView(Context context, ViewGroup decorViewGroup) {
            mStatusBarTintView = new View(context);
            LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getStatusBarHeight());
            params.gravity = Gravity.TOP;
            if (mNavBarAvailable && !mConfig.isNavigationAtBottom()) {
                  params.rightMargin = mConfig.getNavigationBarWidth();
            }
            mStatusBarTintView.setLayoutParams(params);
            mStatusBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
            mStatusBarTintView.setVisibility(View.GONE);
            decorViewGroup.addView(mStatusBarTintView);
      }

      private void setupNavBarView(Context context, ViewGroup decorViewGroup) {
            mNavBarTintView = new View(context);
            LayoutParams params;
            if (mConfig.isNavigationAtBottom()) {
                  params = new LayoutParams(LayoutParams.MATCH_PARENT, mConfig.getNavigationBarHeight());
                  params.gravity = Gravity.BOTTOM;
            } else {
                  params = new LayoutParams(mConfig.getNavigationBarWidth(), LayoutParams.MATCH_PARENT);
                  params.gravity = Gravity.RIGHT;
            }
            mNavBarTintView.setLayoutParams(params);
            mNavBarTintView.setBackgroundColor(DEFAULT_TINT_COLOR);
            mNavBarTintView.setVisibility(View.GONE);
            decorViewGroup.addView(mNavBarTintView);
      }

      /**
       * Class which describes system bar sizing and other characteristics for the current
       * device configuration.
       */
      public static class SystemBarConfig {

            private static final String STATUS_BAR_HEIGHT_RES_NAME = "status_bar_height";
            private static final String NAV_BAR_HEIGHT_RES_NAME = "navigation_bar_height";
            private static final String NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME = "navigation_bar_height_landscape";
            private static final String NAV_BAR_WIDTH_RES_NAME = "navigation_bar_width";
            private static final String SHOW_NAV_BAR_RES_NAME = "config_showNavigationBar";

            private final boolean mTranslucentStatusBar;
            private final boolean mTranslucentNavBar;
            private final int mStatusBarHeight;
            private final int mActionBarHeight;
            private final boolean mHasNavigationBar;
            private final int mNavigationBarHeight;
            private final int mNavigationBarWidth;
            private final boolean mInPortrait;
            private final float mSmallestWidthDp;

            private SystemBarConfig(Activity activity, boolean translucentStatusBar, boolean traslucentNavBar) {
                  Resources res = activity.getResources();
                  mInPortrait = (res.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT);
                  mSmallestWidthDp = getSmallestWidthDp(activity);
                  mStatusBarHeight = getInternalDimensionSize(res, STATUS_BAR_HEIGHT_RES_NAME);
                  mActionBarHeight = getActionBarHeight(activity);
                  mNavigationBarHeight = getNavigationBarHeight(activity);
                  mNavigationBarWidth = getNavigationBarWidth(activity);
                  mHasNavigationBar = (mNavigationBarHeight > 0);
                  mTranslucentStatusBar = translucentStatusBar;
                  mTranslucentNavBar = traslucentNavBar;
            }

            @TargetApi(14)
            private int getActionBarHeight(Context context) {
                  int result = 0;
                  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
                        TypedValue tv = new TypedValue();
                        context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true);
                        result = TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
                  }
                  return result;
            }

            @TargetApi(14)
            private int getNavigationBarHeight(Context context) {
                  Resources res = context.getResources();
                  int result = 0;
                  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
                        if (hasNavBar(context)) {
                              String key;
                              if (mInPortrait) {
                                    key = NAV_BAR_HEIGHT_RES_NAME;
                              } else {
                                    key = NAV_BAR_HEIGHT_LANDSCAPE_RES_NAME;
                              }
                              return getInternalDimensionSize(res, key);
                        }
                  }
                  return result;
            }

            @TargetApi(14)
            private int getNavigationBarWidth(Context context) {
                  Resources res = context.getResources();
                  int result = 0;
                  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
                        if (hasNavBar(context)) {
                              return getInternalDimensionSize(res, NAV_BAR_WIDTH_RES_NAME);
                        }
                  }
                  return result;
            }

            @TargetApi(14)
            private boolean hasNavBar(Context context) {
                  Resources res = context.getResources();
                  int resourceId = res.getIdentifier(SHOW_NAV_BAR_RES_NAME, "bool", "android");
                  if (resourceId != 0) {
                        boolean hasNav = res.getBoolean(resourceId);
                        // check override flag (see static block)
                        if ("1".equals(sNavBarOverride)) {
                              hasNav = false;
                        } else if ("0".equals(sNavBarOverride)) {
                              hasNav = true;
                        }
                        return hasNav;
                  } else { // fallback
                        return !ViewConfiguration.get(context).hasPermanentMenuKey();
                  }
            }

            private int getInternalDimensionSize(Resources res, String key) {
                  int result = 0;
                  int resourceId = res.getIdentifier(key, "dimen", "android");
                  if (resourceId > 0) {
                        result = res.getDimensionPixelSize(resourceId);
                  }
                  return result;
            }

            @SuppressLint("NewApi")
            private float getSmallestWidthDp(Activity activity) {
                  DisplayMetrics metrics = new DisplayMetrics();
                  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                        activity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics);
                  } else {
                        // TODO this is not correct, but we don't really care pre-kitkat
                        activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
                  }
                  float widthDp = metrics.widthPixels / metrics.density;
                  float heightDp = metrics.heightPixels / metrics.density;
                  return Math.min(widthDp, heightDp);
            }

            /**
             * Should a navigation bar appear at the bottom of the screen in the current
             * device configuration? A navigation bar may appear on the right side of
             * the screen in certain configurations.
             *
             * @return True if navigation should appear at the bottom of the screen, False otherwise.
             */
            public boolean isNavigationAtBottom() {
                  return (mSmallestWidthDp >= 600 || mInPortrait);
            }

            /**
             * Get the height of the system status bar.
             *
             * @return The height of the status bar (in pixels).
             */
            public int getStatusBarHeight() {
                  return mStatusBarHeight;
            }

            /**
             * Get the height of the action bar.
             *
             * @return The height of the action bar (in pixels).
             */
            public int getActionBarHeight() {
                  return mActionBarHeight;
            }

            /**
             * Does this device have a system navigation bar?
             *
             * @return True if this device uses soft key navigation, False otherwise.
             */
            public boolean hasNavigtionBar() {
                  return mHasNavigationBar;
            }

            /**
             * Get the height of the system navigation bar.
             *
             * @return The height of the navigation bar (in pixels). If the device does not have
             * soft navigation keys, this will always return 0.
             */
            public int getNavigationBarHeight() {
                  return mNavigationBarHeight;
            }

            /**
             * Get the width of the system navigation bar when it is placed vertically on the screen.
             *
             * @return The width of the navigation bar (in pixels). If the device does not have
             * soft navigation keys, this will always return 0.
             */
            public int getNavigationBarWidth() {
                  return mNavigationBarWidth;
            }

            /**
             * Get the layout inset for any system UI that appears at the top of the screen.
             *
             * @param withActionBar True to include the height of the action bar, False otherwise.
             * @return The layout inset (in pixels).
             */
            public int getPixelInsetTop(boolean withActionBar) {
                  return (mTranslucentStatusBar ? mStatusBarHeight : 0) + (withActionBar ? mActionBarHeight : 0);
            }

            /**
             * Get the layout inset for any system UI that appears at the bottom of the screen.
             *
             * @return The layout inset (in pixels).
             */
            public int getPixelInsetBottom() {
                  if (mTranslucentNavBar && isNavigationAtBottom()) {
                        return mNavigationBarHeight;
                  } else {
                        return 0;
                  }
            }

            /**
             * Get the layout inset for any system UI that appears at the right of the screen.
             *
             * @return The layout inset (in pixels).
             */
            public int getPixelInsetRight() {
                  if (mTranslucentNavBar && !isNavigationAtBottom()) {
                        return mNavigationBarWidth;
                  } else {
                        return 0;
                  }
            }

      }

}